/*
 * Copyright (C) 2011 JiangHongTiao
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
package sk.lieskove.jianghongtiao.multithreaddownloader.request.converter;

import org.apache.log4j.Logger;
import sk.lieskove.jianghongtiao.multithreaddownloader.request.exceptions.ValueNotAllowedException;

import java.util.Arrays;

/**
 * Date of create: May 22, 2011
 *
 * @author JiangHongTiao <jjurco.sk_gmail.com>
 * @version 2011.0522
 */
public class StringEnumConverter implements Converter{
    
    private String[] values;
    Logger log = Logger.getLogger(LengthRangeConverter.class.getName());

    public StringEnumConverter(String[] values) {
        log.debug("StringEnumConverter created with values: ["+values+"]");
        if((values == null) || (values.length == 0)){
            throw new NullPointerException("Values array is null or empty!");
        }
        this.values = values;
    }

    @Override
    public String convert(String value) throws Exception {
        log.debug("StringEnumConverter checking value="+value+" in array: "+
                Arrays.toString(values));
        for(String val:values){
            if(val.equals(value)){
                return value;
            }
        }
        throw new ValueNotAllowedException("Value '"+value+"' is not allowed!");
    }
    
    
}
